SAS Testing

Serial Attached SCSI (SAS) is emerging as an alternative to parallel SCSI interconnect. It was designed to lower costs and complexity associated with parallel SCSI cables and connectors. However, due to communication method change, SAS brings a new, different set of discovery and operating modes that need to be tested and verified against the SAS standard.

Percept Technology Labs now delivers specialized SAS testing at both the command-level and protocol-level.

• Command-level Testing – Using custom test tools, Percept runs systematic tests to verify that the target device executes SCSI commands correctly. Percept test tools support both disk and tape device testing with a collection of exhaustive test scripts. This testing assures that all required and optional commands are being communicated and executed as required by SCSI standards. Any potential problems discovered during testing can be addressed and fixed, preempting expensive field problems and customer satisfaction issues.
• Protocol-level Testing – In addition to command-level testing, Percept is able to test the SAS link at the protocol level. Using specialized tools, our experienced staff is able to simulate protocol errors and verify that systems are able to recognize and recover link-level exceptions as they occur. This type of testing allows Percept to exercise additional functionality not covered during the regular course of testing, that may have significant influence on the stability and robustness of the data subsystem.
• Interoperability testing - Percept can also verify that SAS devices function correctly with the wide variety of SAS equipment currently available on the market – assuring seamless integration into the customer environment, and avoiding product launch surprises and future support problems.

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